Is there a decent guide for converting from Grub to Limine?

[drunkenvicar]

Guide: How to install and configure EndeavourOS for bootable BTRFS snapshots using limine and limine-snapper-sync

This is a write-up for installing EndeavourOS to utilize limine, dracut, snapper, limine-snapper-sync, and pac-snap packages to do a few things: Create bootable BTRFS snapshots for quick and easy system-restore, in case an update or change has caused problems for your system. Create bootable BTRFS snapshots even for kernel updates Utilize limine bootloader, dracut, snapper, and snap-pac functionality for automatically creating both pre and post snapshots when updating your system with yay or p…

Bootloader Limine

Point taken, and it’s correct. To be honest, I never tried Limine but read the cited article lately, so I thought a warning would be alright.

while both these threads don’t answer your question directly, they do talk about this so there might be some valuable clues in there.

also I saw:

good luck